The Nuclear Test Engineer - Thermal Hydraulics (or Thermal-Hydraulics Test Engineer II) supports the validation and testing of safety-related and non-safety-related systems for the SMR-300 Small Modular Reactor program. This role is responsible for developing, executing, and documenting thermal-hydraulic test programs that support design verification, regulatory objectives, and the commercialization of next-generation nuclear technology. Working within a multidisciplinary engineering environment, the Thermal-Hydraulics Test Engineer II will translate design and analysis requirements into test specifications, support test facility setup and operation, analyze performance data, and deliver high-quality technical documentation. The ideal candidate will possess strong analytical and problem-solving skills, a passion for hands-on engineering, and the ability to contribute to complex testing campaigns that directly support advanced reactor development.

Location: Camden, NJ – Relocation Assistance Available!

Primary Responsibilities:

Develop test requirements based on SMR-300 design and analysis inputs.
Translate technical requirements into detailed test plans, procedures, and specifications.
Support the design, setup, commissioning, and operation of thermal-hydraulic test loops and facilities.
Execute test programs, including on-site testing and extended test campaigns.
Ensure proper data acquisition, validation, and quality control in accordance with quality assurance requirements.
Perform data reduction, analysis, and visualization to support engineering evaluations and conclusions.
Prepare comprehensive test reports and data packages for internal and external stakeholders.
Collaborate with cross-functional engineering teams to ensure alignment between testing activities and design objectives.
Interface with internal and external test sponsors to define requirements, communicate progress, and deliver results.
Ensure testing activities comply with applicable safety, quality, and regulatory requirements.
Identify and resolve technical issues encountered during test planning and execution.
Support continuous improvement of test methods, tools, and processes.

Requirements:

Bachelor's degree in Mechanical Engineering, Nuclear Engineering, Chemical Engineering, or a closely related discipline.
0-2 years of relevant laboratory, testing, or engineering experience.
Experience interpreting engineering drawings and P&IDs.
Experience with technical data reduction, analysis, and visualization.
Experience working in a quality-controlled or safety-related environment.
Ability to support on-site testing, extended test campaigns, and occasional travel.
Demonstrated analytical and problem-solving skills with the ability to work independently and provide timely technical recommendations.
Excellent technical writing, communication, and interpersonal skills.

Preferred Qualifications:

Master's degree in Mechanical Engineering, Nuclear Engineering, Chemical Engineering, or a related technical discipline.
3-5 years of relevant engineering experience, preferably in laboratory, testing, or experimental engineering environments.
Experience with test loop or test facility setup, commissioning, and operation.
Proficiency with Python and/or MATLAB for data analysis, automation, and visualization.
Familiarity with instrumentation selection, calibration, and data acquisition systems.
Experience working under NQA-1 quality assurance programs and knowledge of U.S. NRC licensing processes.
Experience developing test plans, procedures, reports, and design verification documentation.
Experience interfacing directly with internal or external customers, sponsors, or stakeholders.
Nuclear industry experience is highly desirable.

A Generation Ahead by Design™
Investing in people who power the future.

We believe great work deserves great rewards. Our benefits go beyond the basics, reflecting our commitment to supporting your whole self…your health, your future, and your career growth. This includes:

Compensation:

Annual compensation based on skills and experience ranging from $105,000 to $125,000

Benefits:

Industry‑leading medical, dental, and vision coverage with a generous employer premium contribution and Day 1 eligibility!
FLEX Program – Hybrid work opportunities available for eligible roles, where business needs and role requirements allow
401(k) retirement plan with up to a 5% company match and immediate vesting to support long‑term financial security
Paid time off and 11 paid holidays to support rest, balance, and recharge
Wellness program offering rewards for participation in company‑supported health initiatives
Commuter benefits supporting mass transit and commuter parking options
Company‑paid life and AD&D insurance for added peace of mind
Education assistance to support continued education and professional growth
Employee support and voluntary benefits, including an Employee Assistance Program and optional coverage such as disability, legal, identity theft, and insurance programs
Benefits eligibility and offerings may vary based on role, location, and employment status

If you’re driven to solve meaningful challenges and make a lasting impact, we invite you to build your career at Holtec—a generation ahead by design™.

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